Shell Programming and Scripting

Hi,

I want a script shell to automate modifying httpd.conf file for
several instances of apache, save httpd.file before changing it, after
modifying it and then restart apache.


- Replace ServerRoot "xxxx" by ServerRoot "yyyy" of all directories :
" /production/work/INSTANCE_NAME/apache/conf/httpd.conf " where
INSTANCE_NAME is the instance of apache (as you can see it, I have
many INSTANCE_NAME in /production/travail/)...

Thanks..

Code:

# SAVE A BACKUP in case things go wrong!
tar -cf backup.tar /production/work/*/conf/httpd.conf

for INSTANCE in /production/work/*
do
        # Replace and save to a temp file, then overwrite the original.
        # Linux supports sed -i, which is more direct, but has the unfortunate
        # side effect of accidentally changing ownerships and permissions.
        # Overwriting it with 'cat' guarantees they won't change.
        sed 's/ServerRoot "yyyy"/ServerRoot "xxxx"/g' < $INSTANCE/apache/conf/httpd.conf > /tmp/$$
        cat /tmp/$$ > $INSTANCE/apache/conf/httpd.conf
done

rm -f /tmp/$$

Many thanks !!

I have questions :

Is this script works for Solaris 10 ?
My second question is : how I can add commands which allow me to :
- delete a complete line like this : LoadModule status_module modules/mod_status.so
- comment (put #) for the line : Include /production/work/WEBLO/apache/conf/..... ?

Thanks

---------- Post updated 09-29-11 at 11:56 AM ---------- Previous update was 09-28-11 at 12:44 PM ----------

Hi

The script is not working. There are error in tar and sed :

tar: Removing leading `/' from member names
tar: /production/work/*/conf/httpd.conf: Cannot stat: No such file or directory
tar: Error exit delayed from previous errors

sed: -e expression #1, char 64: unknown option to `s'


Also please tell me how I can :
- delete one or two line like this : LoadModule status_module modules/mod_status.so ;
- comment (put #) for the line : Include /production/work/WEBLO/apache/conf/.....

Thanks

---------- Post updated at 06:29 PM ---------- Previous update was at 11:56 AM ----------

Please help :
the sed command in this script delete all lines in httpd.conf file.

There was an error in the path. Should be /production/work/*/apache/conf/httpd.conf


I don't know what expression you fed into sed so I can't tell why it didn't work.

Thanks Corona688,

The error is in xxx/yyy, sed don't like "/" !

And finaly I use this code which works fine :

Code:

sed -i.$(date '+%F')'s/ServerRoot "yyyy"/ServerRoot "xxxx"/' "$INSTANCE/apache/conf/httpd.conf"

After testing, I don't see any change in ownerships and permissions.

But can you please telling me how under the same conditions (i.e. for many directories) I can delete 2 lines like :
PPPP
LLLL

which follow each other or not in my httpd.conf file, and write in place of them another line like ZZZZ ?

Thanks.